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103
Safety Outputs
Section 5-4
5-4
Safety Outputs
5-4-1
Overview
The NE1A-SCPU01(-V1) and NE1A-SCPU02 Controllers are equipped with
eight safety output terminals.
By selecting the setup and wiring based on the types of external devices to be
connected or the safety level to be achieved, the NE1A-series Controller can
flexibly handle various applications.
The following output signal line errors can be detected for the NE1A-series
Controllers.
• Contact with the power supply line (positive side, only when the output is
OFF)
• Ground faults
If the diagnostic pulse output is enabled, the following errors can be detected.
• Contact with the power supply line (positive side, when the output is ON
or OFF)
• Ground faults
• Short circuits between output lines
5-4-2
Output Channel Mode Setting
Set the output channel mode based on the type of external device to be con-
nected.
IMPORTANT
If a safety pulse output is set, an OFF pulse signal (pulse width: 580
µ
s) will
be output to diagnose the output circuit when the safety output turns ON.
Check the input response time of the control device connected to the NE1A-
series Controller to be sure that this output pulse will not cause malfunctions.
5-4-3
Dual Channel Mode Setting
The NE1A-series Controller‘s Local safety output terminals can be set to Dual
Channel Mode. Setting Dual Channel Mode enables the following.
• An error will be detected if the two outputs from a user program are not
equivalent.
• If an error is detected in one of the two output circuits, both outputs to the
external device will become inactive.
Channel mode
Description
Not used
Output not connect to an output device.
Safety
A test pulse is not output when the output is ON.
Short circuits with the power supply line (when the output is OFF) and
ground faults can be detected.
Safety pulse
output
A test pulse is output when the output is ON.
This enables detecting short circuits with the power supply line (positive
side) (when the output is ON or OFF), ground faults, and short circuits
between output signals.
Channel mode
Description
Single Channel
Used as an independent safety output.
Dual Channel
Used as a Dual Channel Output with the paired safety output ter-
minal. The output can be turned on when both the output and the
paired safety output are normal.
Summary of Contents for NE1A-SCPU01 - 07-2009
Page 3: ...iv...
Page 9: ...x TABLE OF CONTENTS...
Page 11: ...xii...
Page 15: ...xvi...
Page 70: ...35 Installation Section 3 1 Top Top Bottom Bottom...
Page 72: ...37 Installation Section 3 1 3 1 3 Dimensions and Weight Dimensions NE1A SCPU01 V1...
Page 85: ...50 Wiring Section 3 2...
Page 123: ...88 Explicit Message Communications Section 4 7...
Page 141: ...106 Safety Outputs Section 5 4...
Page 257: ...222 Connection Status Tables Section 10 8...
Page 261: ...226 NE1A series Controller Replacement Section 11 2...
Page 264: ...229 Appendix A Local Input and Test Output Setting Example Local Output Setting Example...
Page 266: ...231 Appendix A Programming Example Local Input and Test Output Setting Example...
Page 267: ...232 Appendix A Local Output Setting Example...
Page 269: ...234 Appendix A Programming Example Local Input and Test Output Setting Example...
Page 270: ...235 Appendix A Local Output Setting Example...
Page 273: ...238 Appendix A Local Input and Test Output Setting Example Local Output Setting Example...
Page 275: ...240 Appendix A Programming Example Local Input and Test Output Setting Example...
Page 276: ...241 Appendix A Local Output Setting Example...
Page 289: ...254...
Page 293: ...258 Index...